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    <title>dtsi</title>
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    <center>Scilab Function</center>
    <div align="right">Last update : April 1993</div>
    <p>
      <b>dtsi</b> -  stable anti-stable decomposition</p>
    <h3>
      <font color="blue">Calling Sequence</font>
    </h3>
    <dl>
      <dd>
        <tt>[Ga,Gs,Gi]=dtsi(G,[tol])   </tt>
      </dd>
    </dl>
    <h3>
      <font color="blue">Parameters</font>
    </h3>
    <ul>
      <li>
        <tt>
          <b>G</b>
        </tt>: linear system (<tt>
          <b>syslin</b>
        </tt> list)</li>
      <li>
        <tt>
          <b>Ga</b>
        </tt>: linear system (<tt>
          <b>syslin</b>
        </tt> list) antistable and strictly proper</li>
      <li>
        <tt>
          <b>Gs</b>
        </tt>: linear system (<tt>
          <b>syslin</b>
        </tt> list) stable and strictly proper</li>
      <li>
        <tt>
          <b>Gi</b>
        </tt>: real matrix (or polynomial matrix for improper systems)</li>
      <li>
        <tt>
          <b>tol</b>
        </tt>: optional parameter for detecting stables poles. Default value: <tt>
          <b>100*%eps</b>
        </tt>
      </li>
    </ul>
    <h3>
      <font color="blue">Description</font>
    </h3>
    <p>
    returns the stable-antistable decomposition of <tt>
        <b>G</b>
      </tt>:</p>
    <p>
      <tt>
        <b>G = Ga + Gs + Gi</b>
      </tt>,  <tt>
        <b>(Gi = G(oo))</b>
      </tt>
    </p>
    <p>
      <tt>
        <b>G</b>
      </tt> can be given in state-space form or in transfer form.</p>
    <h3>
      <font color="blue">See Also</font>
    </h3>
    <p>
      <a href="../elementary/syslin.htm">
        <tt>
          <b>syslin</b>
        </tt>
      </a>,&nbsp;&nbsp;<a href="../linear/pbig.htm">
        <tt>
          <b>pbig</b>
        </tt>
      </a>,&nbsp;&nbsp;<a href="../linear/psmall.htm">
        <tt>
          <b>psmall</b>
        </tt>
      </a>,&nbsp;&nbsp;<a href="../control/pfss.htm">
        <tt>
          <b>pfss</b>
        </tt>
      </a>,&nbsp;&nbsp;</p>
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